Quang, B. H.; Khang, N. S.; Binh, T. D.; Ngoc Diep, T. T.; Kim Lien, H. T. Nomenclatural Notes and Typification of <em>Ophiorrhiza tonkinensis< Em> Pit. (Rubiaceae), an Endemic Species from Northern Vietnam. AJB 2025, 47, 101-106.